You asked about Security

24 people built something like it. 7 are gone.

That is 35% of the ones whose fate we could settle, against 23% across the whole register. 4 were acquired.

Matching
29
Gone
35%
Median life
Acquired
4

Matching launches

checked 8 hours ago · 250 probed today
LaunchedWhat it wasToday
2021-01-01
Cyble - World’s First Intelligence-Driven, AI-Native Security… · cyble.com
still up
2021-11-29
jvsg.com
still up
2021-06-01
AI-native on-call and incident response carefully crafted to help… · rootly.com
still up
2021-02-13
ai-cam.app
moved
2021-12-14
impervious.com
still up
2021-01-01
Authorization Infrastructure securing AI at OpenAI, Zoom, & more · authzed.com
still up
2021-01-01
AI-powered Compliance Platform for PCI 4, CCPA, HIPAA, CIPA, 50+ laws · feroot.com
still up
2021-06-01
Security Delivery Platform to orchestrate AI agents for Service… · contraforce.com
still up
2021-09-12
mf327.com
moved
2021-01-14
control.verygoodsecurity.com
gone~4mo
2021-06-01
Data pipeline for your security data lake. · tarsal.co
acquired
2021-07-26
bluespace.tech
unverified
2021-06-01
AI-driven mobile cybersecurity · mallocprivacy.com
still up
2021-06-01
AI-powered Application Control · idemeum.com
still up
2021-06-01
Never code alone. · squire.ai
gone
2021-02-09
spatcher.io
gone~17mo
2021-06-01
Cloud and Container Security Platform · cloudanix.com
still up
2021-02-07
academy.kerkour.com
still up
2021-07-13
swagitda.com
unverified
2021-06-01
Automate your cyber security risk assessments · telivy.com
acquired
2021-12-09
manasecurity.com
unverified
2021-03-10
aspsecuritykit.net
still up
2021-06-01
We help companies recover lost revenue from chargebacks · protegosolutions.io
gone
2021-06-01
Secure fraud prevention and authentication platform for developers · keyri.com
acquired
2021-01-21
laravel-enlightn.com
gone~58mo
2021-01-01
Automated Answers to Security Questionnaires · stacksi.com
acquired
2021-06-01
Web infra for AI agents · hyperbrowser.ai
still up
2021-01-01
The solution for fine-grained access control in web3 · slashauth.com
gone
2021-01-01
Catch accidental database exposures before the bad guys · observa.com
gone

How this compares

Where they launched

share gone · line is the 23% average
  1. Show HN 743%
  2. Y Combinator 1331%

Y Combinator reports its own outcomes, including acquisitions. The other two are judged by asking the domain, so they are not measured the same way and are never averaged together.

How this was made. Show HN entries are every post from 2021 to 2023 with at least five points that linked to its own domain; code hosts and free hosting are excluded, because a repository outlives the effort behind it. Product Hunt entries needed 100 votes — a far higher bar, so they are the promoted top slice rather than a like-for-like sample. Both are judged by asking the domain whether it still answers: gone means it no longer resolves, refuses the connection, serves a parking page, or says plainly that it shut down. An HTTP error is not counted as gone — a server answering 404 is one somebody still pays for, and an audit of 25 gone-calls found two such sites alive with only a moved homepage. Y Combinator entries use the status YC publishes itself, which is why only those can say acquired. Squatted domains — a lapsed name now serving somebody else's site — are not detected, so these figures run slightly low.